![What is the difference between an external thread and internal thread with respect to bolts and nuts? How would you know which one requires which bolt/nut pairings? - Quora What is the difference between an external thread and internal thread with respect to bolts and nuts? How would you know which one requires which bolt/nut pairings? - Quora](https://qph.cf2.quoracdn.net/main-qimg-10c021968939cc3cab0146c0f00b2968.webp)
What is the difference between an external thread and internal thread with respect to bolts and nuts? How would you know which one requires which bolt/nut pairings? - Quora
Association of Professional Piercers - Know the difference between internal and external threading! Also keep in mind that the majority of externally threaded jewelry is not implant grade metal, and you could
![Not enough people seem to realize this. High quality jewelry ONLY. Start with internally threaded, pass up everything that is externally threaded no matter what. : r/piercing Not enough people seem to realize this. High quality jewelry ONLY. Start with internally threaded, pass up everything that is externally threaded no matter what. : r/piercing](https://external-preview.redd.it/wN08IhUa4DcGvtbcq1E-2WRZDwILb7Erjb5qmQKOJoU.jpg?auto=webp&s=f9c94203b721b8c2a51b10234ddfd7636aff8e31)